Maps for PDAs
I use a variety of mapping software and a Garmin Legend GPS. I have also "screen captured" images of these maps, then transferred then to my PalmOne Zire 72 (as images). But the maps I download into the GPS work better for me.
Delorme makes a Street Atlas map package that will allow you to operate their handheld version on your PDA. An additional option is a GPS package that will turn your PDS into a mapping GPS. I haven't useeither of these so I can't comment on how good they are.